Graphophone and like machine



April l A. REA

GRAPHOPHONE AND LIKE MACHINE Patented Apr. l, 1924.

STATES ANToNro REA, or Bestron, MASSACHUSETTS.

GRAPHOPHONE AND LIKE MIACHINE.

Application tiled April 24, 1922. Serial No. 556,183.

To all whom t may concern.'

Be it known that I, ANTONIO REA, a citizen of the United States, residing in Boston, in the county of Suffolk and State of Massachusetts, have invented an Improve-` ment in Graphophones and like Machines, of which the following description, in connection with the. accompanying drawings, is a specification, like characters on the drawings representing like parts.

This invention relates to graphophones and like machines in which a `stylus carried by a tone arm cooperates with a record disk mounted on a turntable, and has for its object to provide machines of the character described, with a brake for the turntable, which is controlled by the tone arm, so as to be released when the tone arm is moved into one position and to be applied when the tone arm is moved into another position.

The invention further has for its object to provide for operating the brake with the tone arm in different positions, as will be described, whereby the brake may be operated when record disks of diiferent sizes or diameters are used on the machine.

These and other features of this invention will be pointed out in the claims at the end of this specification.

Fig. 1 is a plan view ofy a sufficient portion of a graphophone embodying this invention to enable it to be understood, the tone arm being shown in its extreme positions.

Fig. 2, a side elevation of Fig. 1 looking toward the left, with the turntable in section.

Fig. 3, a detail to be referred to.

Fig. 4, a plan view of the brake mechanism in its released or inoperative position and locked therein.

Fig. 5, a detail in section on the line 5 5,

shown.

kturntable and is secured to the boX or cabinet 16 of the machine, which is representedin Fig. 2. v

The brake lever or member 10 is directly actuated by an arm 17 having a slot 18 into which is extended a pin 19 on the brake lever 10. The arm 17 is fixed to a rod or bar 20 slidable in guides 21, 22, attached to the stationary frame or bar 15. The slidable bur 2O has an extensionin the form of a rod 23, which in the present instance is pivotally connected-with a disk 24 mounted to turn on a pin 25 attached to the stationary frame 15. The disk 24 is provided with a slot 26 through which the pin 25 is extended and which permits the disk to slide on the supporting bar 15 for a purpose as will be described.

The disk 24 is provided with a wedge shaped stud or pin 27 which is adapted to be engaged by a device movable with the tone arm c to eifect movement of the brake actuating bar 2O so as to remove the brake member 10 from engagement with the turntable a. The bar 20 is moved in the opposite direction to engage the brake member 10 with the turntable a by a spring 29, which encircles the sliding bar 2O and has one end connected therewith and its opposite end engaged with the guide 22. n

As herein shown, the spring 29 is compressed when the bar 20 is moved in the direction of the arrow 30 yin Fig. 1 to throw off or release the brake and render the turntable free to be revolved, which in the machines of this character now on the market is usually effected by a spring motor, not Provision is made for locking or holdingthe brake actuating member or bar 20 when the brake is in its released or inoperative position.. To this end, the bar 20 is provided with an inclined surface 32, which constitutes a catch, with which cooperates theV-shaped end of an arm or dog 33 attached to a lever 34 and guided by a pin 35 is extended into a slot 36 in the said dog. The pin 35 is att-ached to the supporting trame or bar 15 and the lever 34 is pivoted at 37 to ay bracket or arm 38 attached to said frame or bar 15.

The lever 34 is acted upon by a springl 39 which serves to keep the dog 3 3 in engagement with the catch 32, as represented in Fig. 4, and thus hold or lock the brake 10 in its disengaged or released position while the record b is being played.

-Provision is made for disengaging the locking dog 33 from the catch 32 by the device carried by the tone arm. T o this end, the lever 34 is provided with a pin or stud 40 with which cooperates the device carried by the tone arm, so that the lever 34 may be turned against the action ol' the spring 39 to withdraw the locking dog 33 Vlfromengagement with its catch 32 and permit the spring 29 to move the rod 2O in the direction opposite to that indicated by the arrow 30, and through the arm 17 and pin 19 turn the brake member 10 so as to engage its member or pad 12 with the turntable, and thus stop the turntable.

The device connected with the tone arm may be made as herein shown, and consists of an arm or lever 43 Y.tri'ctionally clamped by disks 44, see F ig. 3, to an arm 45 on a split ring or collar 46, which is engaged with the tone arm c and is secured thereon to move therewith by a screw 47 and nut 48, said screw passing through ears 49 at the 'free ends of the collar and having a spring 50 thereon between said ears.

The arm 43V is capable of being turned by the operator on the pin 51, upon which the friction washers or disks 44 are mounted, :tor purposes of adjustment, as will be described, and when adjusted the friction created by the disks 44 Vis sui'liciently great to render the arm 43 practicallystationary on the arm 45 for brake Operating puri poses. The arm 43 is designed to cooperate with a stop or pin 5 2 on the supporting member 15, when the tone arm c is in its extreme outward position with the stylus (Z V beyond the turntable, as shown by dotted lines in Fig. l. The arm 43 is also designed to engage the `pin 40 on the lever 34 and move the latter so as to trip the locking device or dog 33 for the brake mechanism and allow the brake to be applied by the spring 29 at or about the time the tone arm c reaches its eXtreme inner position with the stylus d at the end of the record.

By reference to Fig. 1, it will beseen that the arm 43 turns vwith the tone arm c in a circular path Vfrom the fixed stop 52 to the movable stop 40; that it is moved from the fixed stop 52 toward the movable sto-p 40 with the tone arm c under the influence ofV the record Z); and is moved in the opposite direction by the'oper'ator when he turns the tone arm back into its inoperative position represented by full lines in Fig. l.

n the backward movement or the tone arm c the arm 43 engages the front edge or ape-X of the stud or projection 27 and causes the disk 24 to be turned in the direction indicated by the. arrow 54 until the brake actuating bar 20 has been moved sut ficiently to carry the catch 32 beyond the end ot the locking dog which allows the spring 39 to move the tripping lever 34 toward the bar 2O and bring the locking dog 33 into the path of the catch 32. lt the tone should be released at this time the brake would. be locked in its released position as shown in Fig. 4, in which position the arm 43 is in front of the stud 27, and the tone arm is at such time over the turntable with the stylus over the record. To permit the' brake to be ap-V plied to the turntable, the tone arn'i is still further moved in the same direction, and in this 'further outward movement, the arm 43 turns the disk still further in t-he direction oi" arrow 54 until the arm 43 is disengaged from the stud 27 and is engagedy with the xed stop 52.

During the movement or Vthe arm 43 from in front or the stud 27 to the position in rear ot said stud, the rod 2O is further moved in the direct-ion indicated by the arrow 30' and still further compresses the spring 29 and increases the power ot the same su'tiiciently to overcomethe spring 39 and move the bar 2O in the direction of the arrow 56 to apply the brake to the turntable, at which time the tone arm overhangs the turntable as represented by dotted lines in Fig. 1.

The increased power ot the spring 29 is suiiicient to carry the beveled latch 32 past the beveled face of the dog 33 against the action of the spring 39.

It will thus be seen that in the inoperative position of the tone arm, with the stylus overhanging the turntable, the latter is held stationary bv the brake, and the arm 43 is engaged with the fixed stop 52. To start the machine in operation, the operator irst swings the tree end 0i the tonearm over upon the record on the turntable sov as to move the arm to a position in front of the stud 27, which is permitted by the slot 26 in the disk 24. for as the arm 43 is moved Vaway from the fixed stop 52 it engages the stud 27 and forces the disk 24 in the direction or the arrow 57 Fig. l, until the arm 43 has cleared the stud 27 and passes in front thereof, whereupon the disk 24 is returned to its normal position by the rod 23, which is sutciently resilient to act as a spring. rThe return ot' the disk 24 t0 its normal position, places the stud 27 in the path of movementof the arm 43, whereupon the operator turns the free end of the tone arm c toward the circumference of the record Z) to bring the stylus Z into position to engage the record at its starting point. This outward movement of the tone arm c causes the arm`43 to engage the stud 27 and' to turn the disk 24 so as to disengage the brake l0 and release the turntable a, which is then rota-ted by its motor.

As soon as the brake is disengaged, it is locked in its inoperative or off position by the dog 33, as shown in Fig. 4, and remains in this position, until the stylus has reached the end of the record, at which time the arm 43 engages the pin 40 on thelever 34, moves the latter to trip the locking dog 33 and allow the spring 29 to apply the brake as above described. The arm 43 may be adjusted by turning it on its pivot 51, so as to position it with rel-ation to the tone arm, so that the arm 43 may trip the locking dog 33 and allow the brake to be applied to the turntable when the stylus d reaches a predetermined position over the turntable, which enables records of different sizes or diameters to be used on the machine and have the brake applied and the machine stopped when the stylus reaches the end of each record, and which also permits the machine to be stopped, if so desired, when the stylus reaches predetermined points of the same record.

From the above description, it will be seen that the brake is applied to the turntable when the end of the tone arm which carries the stylus is beyond or outside of the record, and that the brake is released from the turntable by moving the free end ofthe tone arm inwardly over the record to a position beyond the starting position for the stylus and then outwardly into the starting position. It will further be noticed that when the tone arm is in its starting position,

the brake is locked in its released 0r inoperative position.

It will also be noticed that when the stylus reaches the end of the record, the brake is unlocked by the device on the tone arm and is automatically applied to the turntable to stop the saine.

It will further be noticed that the device movable with the tone arm effects the release of the brake in order to start the machine and also effects two applications of the brake, one application taking place when the stylus reaches the end of the record, and the other when the stylus is beyond the starting position of the stylus and tone arm.

It is not desired to limit the invention to the particular embodiment thereof which is herein shown.

Claims:

l. In a machine of the character described, in combination, a turntable, a tonev member to the turntable, a catch on said bar, a locking dog cooperating with said catch, a lever to which said locking dog is connected, a collar mounted on said tone arm and provided with an arm to eiect movement of the slidable bar in one direction to release the brake member and to unlock said slidable bar and permit said spring to move it and apply the brake member.

2. In a machine of the character described, in combination, a turntable, a tone arm cooperating therewith, a brake member cooperating with said turntable, mechanism for moving said brake member in one direction to disengage it from said turntable, means for moving the brake member in the opposite direction, to engage it with the turntable, means for locking the brake member in its disengaged position, and a device governed by the tone arm for actuating the locking means and adjustable into different positions with relation to` said locking means.

3. In a machine of the character described, in combination, a turntable, a tone arm cooperating therewith, a brake for said turntable, mechanism for actuating said brake, and al device movable with said tone arm for controlling said brake actuating mechanism to release and apply the brake by movement of the tone arm into the different positions in the same direction.

4. In a machine of the character deecy scribed, in combination, a turntable, a tone arm co-operating therewith, a brake for said turntable, mechanism for operating said brake and a device movable with the tone arm and adjustable to enable the brake to be applied at different points in the movement of the tone arm.

5. In a machine of the character described, in combination, a turntable, a tone arm cooperating therewith, a brake for said turntable, and means controlled by the tone arm for releasing the brake by movement of the tone arm in one direction and for applying the brake by further movement of the tone arm in the same direction.

6. In a machine of the character de-r scribed, in combination, a turntable, a tone arm cooperating therewith, a brake for said turntable, mechanism for actuating said brake, a locking device cooperating with said actuating mechanism to lock the brake in its inoperative position, and a device movable with said tone arm and cooperating with said actuating mechanism for releasing the brake by movement of the tone arm in one direction and also cooperating with said locking device when the tone arm is moved in the opposite direction to eifectthe application of said brake.

7. In e machine of the character described, in combination, e turntable, e tone erm cooperating therewith, e brake member cooperating with said turntable, a slicleble ber connected. with said brake member, e, spring to move said ber to apply the brake member to the turntable, e rotatable disk to which said sliflable bar is connected, and a device movable with said tone erm lcooperating with said disk to turn it and release 10 said. brake.

iii testimciiy whereof, l have signed my name to this specioetioii.

ANTONIO REA. 

